Balance between the reflex and tonic autonomic control of the heart with special respect to baroreflex sensitivity in children with bronchial asthma was the aim of this study. We found the age-dependent valuse of circulatory parameters (pulse interval, systoloc blood pressure) with the exception of BRS in healthy controls. We did not find any age-dependent development of these parameters in children with bronchial asthma. It seems that these changes in asthmatic children are not stable, because they were partially readjusted during the 6 weeks balneal therapy.